Bottom Line:---> NO don't even attempt this. . . You could very well end up wearing an orange jump suit for a very long time. Start off with a MS in Computer Science with minors in Math and Electrical Engineering. . that would be a good starting point for what you'd like to do

I am thinking of starting my own ROM hack on Zelda Ocarina of Time. I plan on adding more enemies in places, making my own complex puzzles, etc.

I have never encountered any sort of hacking, thus i am a complete beginner.

Bottom line:

Am I capable of a project like this, or would I need lots of training and actually go to school and study programming type of thing

Anything is greatly appreciated!